Front door lock



July 29, 1958 c. CiHILLGRl-:VN v 2,844f953 v I' FRONT DOOR LOCK 2Sheets-'Sheet 1 Filed Sept. 6r 1955 11.716,1, a f4 l za/m. 3.-

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July 29, 1958 c. c. HILLGREN 2,844,953

FRONT DOOR Loox Filed sept. e, 1955 2 sheets-sheet 2 (gev United StatesPatent O FRONT DOOR LOCK Carl C. Hillgren, Newport Beach, Calif.

Application September 6, 1955, Serial No. 532,703

7 Claims. (Cl. 70-,146)

The present invention relates to a lock set, and particularly to a lockset for a front door.

VPresent day locks, such as front door locks, are required to be ruggedand reliable and of efficient and economical design. In addition, theyshould be attractive and present an appearance of strength Vandsecurity. Furthermore, modern door locks are called upon to serve aslocks and latches capable of being operated from both sides of Vthe doorand at the same time are required to be of integrated and compactconstruction.

Accordingly, it is an important object of my invention to provide arugged and reliable lock rof eicient and economical design. Y

Another object is to provide a highly reliable and economical lock ofcompact construction and capable of serving as a lock and a latchoperable from both sides of the lock assembly.

A further object is to provide a front door lock set of compact andrugged construction and design and affording a high degree ofversatility.

Additional objects will become apparent from the following description:

In general terms, my invention comprises a lock set containing a boltand lock cooperatively associated with a pivotally mounted plate meansarranged to operatively engage both the bolt and the lock. A handle iscooperatively associatedwith the plate means for pivoting it and urgingthe bolt into an unbolted position. This preferably is accomplished by alever connected to the handle and projecting into a slot, preferably cutthrough the plate means at an angle to produce a pivotal movement in theplate means as the lever s moved longitudinally through the slot. A stopmeans is operatively connected between the lock and the plate means toprevent or stop pivotal movement of the plate means when the lock is inthe locked position .and to permit pivotal movement when in the unlockedposition.

A more detailed description of a specific embodiment of the invention asapplied to a front door is given with reference to the drawings,wherein:

Figure 1 is a front elevational view showing the lock set mounted on aright-handV door;

Figure 2 is a cross-sectional view taken on line 2-2 of Figure l showinga handle projecting from the front of the lock set in anormal position;

Figure 3 is a partial detailed view showing the handle in a depressedposition for unlatching the door;

Figure 4 is a cross-sectional view taken on the line 4-4 of Figure 2 andshowing the condition of the lock set when the door is locked;

Figure 5 is a view similar to that of Figure 4 showing y the conditionof the lock set when the door is unlocked;

Figure 6 is a partial cross-sectional view taken on the line 6 6 ofFigure 2 showing a lost motion bearing and groove; 'Y

Figure 7 is a partial detail view showing a plate of the lock setarranged for use on a left-hand door; and

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Figure 8 is a partial cross-sectional view taken on the line 8 8 ofFigure 7.

In the embodiment shown in the drawings, an elongated anchor plate 10 ispivotally mounted on a pivot bearing 11 at a central point in the plateabout midway between its ends. The upper portion of the plate 10 isoffset inwardly at 12 so that the upper end of the plate is adjacent thesurface of the door 13, on which the lock set is shown mounted. Aspindle 14 is xed to the upper end of plate 10 at right angles theretoin any convenient manner and is made to extend centrally into acylindrical hole 16 bored through the door 13. The lower end of plate 10is bifurcated. The prongs 17 forming the lower bifurcated end of theplate are made to converge both on their inside and outside edges towardtheir tips, as shown. Intermediate the middle and lower end, the plate10 is provided with triangular aperture 18, having its apex toward thelower end of the plate and its base toward the upper end of the plate.Pivotally mounted on a screw 19, threaded in plate 10 adjacent thecenter of the base of aperture 18, is a bar 21. The lower end of bar 21is provided with a finger 22 bent inward, as best shown in Figure 8, toengage in either a left side aperture 23, or a right side aperture 24,formed through plate 10 at either side of the apex of triangularaperture 18. It will be seen that bar 21 can be fastened either acrossthe left side of triangular aperture 18, as shown in Figures 4 and '5,or across the right side oftriangular aperture 18, as shown in Figure 7,to form an elongated, inclined slot.

The anchor plate 10 is pivotally mounted on the bearing 11 formed on theinside of lock set housing 26 by a screw 27 and washer 28, as best shownin Figure 2. The housing 26 is dished, as shown, to form a hollow spacebetween the front door 13 and the housing wall. It can be made of anyconvenient and preferably attractive design, such as the compact designshown. A tumbler latch or cylinder lock 29 and a door handle 31 are madeintegral with or attached to the housing 26, in any convenient manner.Extending from the inside wall of housing 26, and vertical thereto, aretwo internally threaded anchor posts 32. The lock set is mounted on thefront door 13 by screws 33 threaded into anchor posts 32 through doorknob flange 34.

A lever 36 pivotally mounted at 37 is provided at the outer end thereofwith a handle 38 extending from the lock set and at the inner endthereof with a stub spindle carrying a rotatably mounted hardenedcylinder 39. The

cylinder 39 is dimensioned to fit slidably in the slot formedv byaperture 18 and bar 21 in plate 10 and normally is urged to the bottomof the aperture by a spring 41. When the handle 38 is depressedmanually, as shown in Figure 3, the stub spindle is urged upward againstthe lower inclined edge of bar 21 and imparts a forceful pivotalmovement to plate 10 in either a clockwise or counterclockwisedirection, depending upon the positioning of finger 22 of bar 21 ineither aperture 23 or aperture 24. The pivotal movement of plate 10 in aclockwise direction, for example, as shown in Figures 4 and 5, causesspindle 14 to urge latch bolt actuator 42 to the right and retract latchbolt 43 into latch bolt assembly housing 44 to thereby unlatch the door,as shown in Figure 5. This unlatching action can take place whencylinder lock 29 is in the unlocked position shown in Figure 5, but notwhen the cylinder lock is in the locked position as shown in Figure 4.In the latter position, a wedge 46 acts as a stop means and stops orprevents any pivotal movement of plate 10 by acting against the insideedges of prongs 17, as shown in Figure 4. In the unlocked position ofcylinder lock 29, wedge 46 is rotated from a horizontal, lockedposition, to a Vertical, unlocked position, as shown in Figures 4 and 5,and plate 10 can,vl

3 in the latter case, be pivoted until one of the prongs 17 engages aside of the wedge 46.

More particularly the wedge 46 includes a tubular stem 48 provided witha bore 48 of square cross section. An inside bolt consisting of a handle49 is rotatably mounted in a rosette 51 and is fixed to a stem 52 ofsquare cross section. The stern S2 is slidably received in the bore 48of stern d, and can be used to independently turn wedge 46 to thehorizontal or vertical position for locking or unlocking the door fromthe inside. The movement described is made possible by employment of alost motion device consisting of a curved groove 53 and a ball bearing54 spring loaded by coil spring S6.

When the door is unlocked but closed, it can be opened from the insideby turning door knob 57 to thus turn stub spindle 58. This action urgeslatch bolt actuator 42 into latch bolt assembly housing 44 and retractsbolt head 43 into assembly housing 44 to unlatch the door, as shown inFigures 4 and 5. The opening action through knob 57 is independent ofthe position of anchor plate it), cylinder lock 29 or inside lock handle49.

Anchor posts 32 position latch bolt housing 44. When it is desired toconvert the lock set from a right-hand door, as shown in the drawings,to a left-hand door, the latch bolt housing 44 is removed from anchorposts 32 by simply sliding the latch bolt assembly over the ends of theanchor posts. The latch bolt assembly 44 is then turned around 180degrees and again slipped back into position on the anchor posts 32. Thebar 21 is loosened by unscrewing screw 19 and moving finger 22 fromaperture 23 to aperture 24 and again tightening screw 19.

It will be observed that the lock set described above is of rugged andcompact construction, and is eiciently and economically designed.Relatively few moving parts are employed in the lock set construction,and their design and cooperation is such that an exceptionally highdegree of reliability in the operation of the set is assured. Theadaptability of the lock set Afor both rightJhand and lefthand doors,with a minimum of adjustment, is a valuable feature resulting in a highdegree of versatility and flexibility.

The foregoing description given in connection with a particularembodiment of the lock set of my invention is given primarily toillustrate that particular embodiment. lt is understood that manyvariations in structure and changes or modifications of design anddetail of the illustrated lock set will occur to one skilled in the artand that the invention can be applied to a variety of lock set and lockhardware constructions, in addition to the righthand and left-hand doorapplication illustrated. Accordingly, it is understood that suchapplications of the invention and such changes, modifications orvariations in structure, design, and details of the specific embodimentillustrated and described above may be made within the scope of theappended claims without departing from the spirit of the invention.

Whatl claim is:

1. In a door lock set containing `a main lock accessible from theoutside thereof, a bolt operatively connected to a door knob operablefrom inside a door on which the set is mounted, and a bolt independentfrom the main lock and operable from inside the door, the improvementcomprising an elongated plate having two opposed ends and pivotallymounted intermediate its ends on pivot means in the set, a rod fixed toone end of the plate and operatively engaging the bolt for urging thebolt into an unbolted position when the plate is pivoted, a bifurcatedportion at the other end of the plate, a wedge member disposed betweenprongs of the bifurcated portion and carried on a pivotally mountedconnector establishing a rotatably engaging lost motion connectionbetween inner ends of the main loclr and the bolt, the wedge beingadapted Ifor wedging the plate against pivotal movement in a lockedposition of the main and second locks and for freeing the plate forpivotal movement in the unlocked position of the locks, the plate beingprovided with a triangular aperture therethrough, an arm movably mountedadjacent the aperture and adapted for fastening across a right sideportion of the aperture in one setting and a left side portion inanother setting for forming a slot inclined to the right and to theleft, respectively, of a longitudinal center line of the plate lforadapting the lock set for either right or leftehand doors, and apivotally mounted lever arm connected to a handle and projecting intothe slot for pivoting the plate by sliding longitudinally therein.

2. A combination lock and latch set for a door having outside and insidefaces comprising a housing having a closed outer side and an open innerside adapted to bc mounted against a face of the door, a plate pivotallysecured between opposite ends thereof on said housing, a latch boltmounted horizontally in said door, and a spindle fixed on one end ofsaid plate and extending through the open side of said housing intooperative cngagement with the latch bolt, a door handle on the closedside of said housing, a plate tilting member pivotally mounted on ahorizont-al axis on said housing, said member having an operating handleextending outwardly of the housing and having a plate moving elementextending to a position adjacent the end of said plate opposite fromsaid spindle, and means in operative engagement between the plate movingelement and said plate whereby to enable operation of said latch bolt bysaid operating handle.

3. A combination lock and latch set for a door having outside and insidefaces comprising a housing having an open inner side adapted to bemounted against a face of the door and having a closed outer side, aplate pivotally secured between opposite ends thereof on said housing, alatch bolt mounted horizontally in said door and a spindle extendingthrough the open side of the housing between one end of said plate andthe latch bolt and in operative engagement with the latch bolt, a doorhandle on the closed side of said housing, a plate tilting ymemberpivotally mounted on a horizontal axis on said housing, said memberhaving an operating handle extending outwardly through the closed sideof the housing to a position adjacent said door handle and having aplate moving element extending to a position Vadjacent the end of theplate opposite said spindle, means in operating engagement between theplate and said plate moving element whereby to enable operation of saidlatch bolt by said operating handle, means forming a recess at one endof said plate, a bolting member rotatably mounted in the door and havinga bolting handle at the inside face of the door, said bolting memberhaving an end extending through the open side of said housing, a wedgeon the end of said bolting member within said recess and havingalternative positions respectively blocking and unblocking operation ofsaid plate.

4. A combination lock and latch set for a door having outside and insidefaces comprising a housing having an open side adapted to be applied tothe door, a knob assembly adapted to be mounted on the inside face ofthe door and anchoring means adapted to be secured between the knobassembly and said housing, a plate pivotally secured between opopsiteends of said housing, a latch bolt adapted to be mounted horizontally insaid door in operative engagement with the knob assembly and a spindleextending between one end of said plate and said latch bolt in operativeengagement with the latch bolt, said plate having an aperture adjacentthe other end, a door handle on said casing, a plate tilting memberpivotally mounted on a horizontal axis on said housing, said memberhaving an operating handle extending outwardly of the housing and aplate moving element extending into said aperture, and a cam elementhaving alternative tilted positions at opposite sides of said aperturefor right-hand and lefhand operation, said cam element being subject tocamming engagement with said plate moving element whereby to enableoperation of said latch bolt by said operating handle, means forming arecess at one end of said plate, a bolting member rotatably mounted inthe door and having a bolting handle at the inside face of the door, awedge on said bolting memberlying Within said recess and havingalternative positions respectively blocking and unblocking operation ofsaid plate.

5. A combination lock and latch set for a door having outside and insidefaces comprising an exterior housing having an open side adapted to beapplied to the outside tace of the door, a knob assembly adapted to bemounted on the yinside face of the door and anchor posts adapted toextend through the door and to secure the knob assembly to said housing,a plate pivotally secured between opposite ends of said housing, a latchbolt in said door in operative engagement with the knob assembly and aspindle on one end of said plate in operative engagement with the latchbolt, said plate having an aperture adjacent the other end, a doorhandle on said casing, a plate tilting member pivotally mounted on ahorizontal axis on said housing, said member having an operating handleextending outwardly of the housing and a plate moving element extendinginto said aperture, and a bar having alternative tilted positions atopposite sides of said aperture ttor right-hand and left-hand operation,said bar being subject to camming engagement with said plate movingelement whereby to enable operation of said latch bolt by said operatinghandle, means forming a recess at one end of said plate, a boltingmember rotatably mounted in the door and having a bolting handle at theinside face of the door, a wedge on said bolting member lying withinsaid recess and having alternative positions respectively blocking andunblocking operation of said plate, and a keylock in said housing havinga lost motion attachment to said bolting member and movable to aposition wherein said bolting member is released from blocking position.

6. A combination lock and latch set for a door having outside and insidefaces comprising a relatively shallow exterior housing having an openside adapted to be applied to the outside face of the door, a knobassembly on the inside face of the door and anchor posts secured betweenthe knob assembly and said housing, a plate pivotally secured betweenupper and lower ends of said housing, a horizontal latch bolt in saiddoor in operative engagement with the knob and a spindle fixed on theupper end of said plate in operative engagement with the latch bolt,said plate having adjacent the lower end a triangular aperture With theapex thereof extending vertically, a vertically elongated door handle onsaid casi-ng, a plate tilting member pivotally mounted on a horizontalaxis on said housing, said member having an operating handle extendingoutwardly of the housing and a plate moving element extending into saidaperture, and a bar having alternative tilted positions at oppositesides of said aperture for right-hand and left-hand operation, said barbeing subject to camming engagement with said plate moving elementwhereby to enable operation of said latch bolt by said operating handle,means forming a recess at the lower end of said plate, a bolting memberrotatably mounted in the door and having a bolting handle at the insideface of the door, a wedge on said bolting member lying within saidrecess and having alternative positions respectively blocking andunblocking operation of said plate, and a keylock in said housing havinga lost motion attachment to said bolting member and movable to aposition wherein said bolting member is released from blocking position.

7. In a lock set containing bolt means and lock means, plate meansmounted on pivot means for operative engagement of the bolt means,handle means cooperatively associated with the plate means for pivotingthe plate means and urging the bolt means into an unbolted position, andstop means operatively connecting the lock means to the plate means forpreventing pivotal movement `of the plate means in the locked positionof the lock means and permitting pivotal movement in the unlockedposition, Said plate means comprising a generally elongated plateprovided with a slot running at an angle to a longitudinal center lineof the plate, the handle means comprising a pivotally mounted lever armconnected to a handle and projecting into the slot Ifor pivoting theplate by sliding longitudinally therein, said slot being formed by atriangular aperture through the plate, an arm movably mounted adjacentthe aperture and adapted :for fastening across a right side portion ofthe aperture in one setting and a left side portion in another settingfor forming a slot inclined to the right and to the left, respectively,of the longitudinal center line for a lock set wherein the bolt operatesto the right side and the left side, respectively, thereof.

References Cited in the le of this patent UNITED STATES PATENTS1,169,541 Hurd Ian. 25, 1916 1,380,116 Solaini May 31, 1921 1,563,060Augenbraun Nov. 24, 1925 1,629,764 Wread May 24, 1927 2,346,618 SchlageApr. 11, 1944

